Expanding plug for arbors of paper-rolls



(No Model.)

W. R. FARNSWORTH. EXPANDING PLUG FOR ARBOBS 0]? PAPER ROLLS. No.683,451. Patented Feb. 5, 1895.

N 1 4 A 1 f s w Q w Zw W UNlTED STATES PATENT @rrrcn.

W'ILLIAM R. FARNSWORTH, OF TURNER/S FALLS, MASSACHUSETTS.

EXPANDING PLUG FOR ARBORS OF PAPER-ROLLS.

' SPECIFICATION forming part of Letters Patent No. 533,451, datedFebruary 5, 1895.

Application filed June 5, 1894. Serial No. 513,534- (No model.)

T0 at whom it may concern:

Be it known that 1, WILLIAM R. FARNS- WORTH, a citizen of the UnitedStates, residing at Turners Falls, in the county of Franklin and Stateof Massachusetts, have invented new and useful Improvements inExpansible Plugs for the Arbors of Paper-Rolls, of which the followingis a specification.

This invention relates to improvements in shafts having expandingdevices whereby the shaft may be readily setwithin the tubular core of aroll of paper so that the shaft temporarily becomes the journal or arborfor the roll as desired while the roll is being made up at the mill, orwhile the paper is being used on a printing press.

, The purpose of the present improved device is to accomplish moreefiectually, and by simpler and less expensive means, the results in amanner attained by the employment of the expansible shaft set forth inLetters Patout of the United States granted to me September S, 1891, No.459,200, for improvements in expansible shafts, and the inventionconsists in constructions and combinations of parts all substantially aswill he hereinafter fully set forth and pointed out in the claims.

Referenceis to be had to the accompanying drawings which form part ofthis specification, and in which- Figure 1 is a longitudinal sectionalview through a tubular cored paper roll andin part through the arbor andone of the expansible plugs or devices which surround the arbor, saidview being also in part a side view of the shaft and the other plug ofthe pair of plugs usedin conjunction therewith. Figs.2 and 8 are crosssectional views on lines 2-2 and 3-3, Fig. 1. Fig. 4 is a perspectiveview of one of the segments, and Fig. 5 is a perspective View of one ofthe sliding tapered bars.

Similar characters of referenceindicate corresponding parts in all ofthe views.

In the drawings :rrepresents the relief pa per having the tubular core00 A represents the tubular body of the plug which is adapted to bercmovably fixed to the shaft 0. The said cylindrical tubular body A hasat its inner end the external flange 0, and the several longitudinalgrooves or ways,

able in said ways b. Each bar comprises at one-half, or other suitableportion, of its length the transversely dovetailed and longitudinallytapered outstanding member at,

while its shank or other half has at its outer side the series ofscrew-thread-sections f, f.

D, D represent the segments which along theirinner sides have dovetailWays 9 therein, within which the outstanding dovetailed portions of thebars B engage. The segments have their opposite sides curvedapproximately corresponding to the inner peripheral contourof theopening through the roll, or the core thereof.

The aforesaid tubular body, A, of the plug has intermediate between itsends the outstanding separated wings or flanges a, which are arrangedbetween the aforesaid longitudinal ways 6. These prevent the segmentsfrom having any outward endwise motion while they may have no inwardendwise motion by reason of the abutment of their flangesj,

against the end of the roll or by the contact of their inner endsagainst the annular flange, c, of the tube A. Next outside of the saidwings, a, a of the tubular body, A, and concentrically surrounding thelatter is the circular nut G, the teeth of which screw engage thesections of threads f of the slide bars, B, B, and this nut isprovided-with spanner holes or is otherwise adapted to be convenientlyturned by any suitable implement. Next outside of the nut G is a collar,on, which tits about the tubular body, A, being secured thereto,preferably removably as by the set screw n. This set screw also projectsradially inwardly through the tubular body, A, to temporarily hold theplug as a whole in its place upon the shaft.

The nut lying between the wings, a, of the tubular body, A, and thecollar, m, thereof, of course can have no endwise movement, while itsrotational movement will effect the end- Wise movement of the taperedslide-bars, B. The nut holds the slide bars to the body and the slidebars, by reason of the dovetail engagements which they have with thesegments, keep the latter from radial displacement. The said collar haslongitudinal apertures internally, one of which is seen at m toaccommodate and permit the outward movement of the slide bars.

tiallyas described; may'he readily utiiizedas i he journal fora;rolls-t" papen forinstanee:

rthe followirig manfnefiitbeing understoodthat one efthe plugsmaybemove;eudwise eieegaee rift frem the siiaftw The plugs'are contracted arid theT rightf hand; message; wardly alongfiai id 'ofii the 'i'shaft so thatthe *shaft may he 3 brought eudwiseinto and to through the rollftoplaeeits plug iwhiehis at f its-other endipertioe and which hasnot u-ee 7essa-rily' been i lo ""ened within the: matter Q 5 tiieireiirepehi ngeIl -he -;sesond--plug is new:

- f brought ra iaee y '{Lmeutliot theopening at the other ends-t the irel i I g -two pl-ugs are now-expanded hy iorcingethe segments ratiiailyoutward through the ma? -ri"piilatioii errata reader portions; andtapered portions, ta "erefd segineatshaving dovetaiiwaysiawhieh am ere-eportions eti the sate barsjhave slid.

113g" ehgagernenta the hrrtisurroua ding; and iewieegagtegestimatesparts'ef tlie slidie are andmeansforpreventing endwise' morehientiiefthei'iuut substautially;asdeseriioeda 3 I The combinatioh withthe tubular bedy .r, haeing zextereauy' the longitudinal ways,.e theslide bars guided in said ways having the beveled portions, and thethreaded portions, the segments having the dovetail slide ongagementwith the beveled portions of said bars and the nut surrounding thethreaded portions of the bars and holding the bars against radialdisplacement, While said bars by their dovetail engagement withthesegments, prevent the latter from radial displacement, substantiallyas described.

3. The combination with the tubular body having externally therein thelongitudinal ways and the bars B sliding longitudinally in said wayswhich have the outstanding tapered and dovetail portions,d, and thethreaded portions,f, of the wedge-formed segments having the dovetailgrooves in which the portions, d, ofthe said bars fit, and with whichsegmental if A shaft equi-ppedwithatheplegs-euhstam.-

engagedrtor preventing: their. cutwardeud, a =55 r I i -;itl1reaftedextremities otthe' bars and mea g; I

on the a shaft and within the I I I I screw: threads, the segments D har-tug esecured by its set serew; ahhe;

r niits sefiieiently far and. 1

g I I y;the len gitudiuaiways, iof: ide bjars guided ia said ways iwhieh 'have prejeetions which;are providedjoh the tubes z wise movementthe-nut surrounding-the at, andsharia; f,haying;the,1-seetionsof i thedovetaii;engagemeutsawit the; saidbai the;nutzsurrouudingau neiggalgemgng the; threaded -sh:ah k e bars andat; one edge t shearingagainstsaidjwiegs,and the eeliarse j ,e I "eureduporrtheeutereid:ei-thetubeandeon ;f l V stituting the other side beariugtarsaidput;-m:

:suhstautiallyasdescribed; 5. ilhe combination withrthe' tubular core iis! E 1 i and thgersha fthaviag thereon; I f i e as" hngteeittreae ridserewjenga mg ethegthr'eadect ertiens; otjthe Qhars, fan

WILLIAM R. FARNSWVORTH.

Witnesses:

O. W. HOSMER, W. L. SALMON.

e; The eombinatioa withfthe tube Ahatingi intermediatebetween itsendsthe separated WllIgSiQl. tlaugeajmand the external lougi; a l 2 g 1a :T tudinaliwayseh,rangingbetweeu said win gs r a j[ cit-the bars-Bsetjtogslideiasaidgways 3 nd, .i havingtheeutstandinglongitudinallywedgei :fcrmeaani trausversely detet tileii stame 1 its; [11

